Main laser feature is output of temporary shaped pulses based on electrooptical modulator driven by programable arbitrary form generator (AWG). Pulse shaping resolution is 125 ps, while maximum pulse length is 10 ns. Start of the system is single mode CW laser. Then light is amplified in fibre amplifier, later AWG driven modulator transmits only required temporal shape and duration pulse which is amplified in diode pumped regenerative amplifier in order to reach energy sufficient to amplify in singly pass flash-lamp pumped amplifiers. Power amplifier is a chain of single-pass amplifiers where pulse is amplified up to required energy. During amplification spatial beam shaping is emloyed in order to get flat top shape at the output. The second harmonic generator is based on angle tuned nonlinear crystal placed in a heater.

Tab 2

Specifications 1)

Model

NL944

NL949

Pulse energy (rectangular pulse in time domain 5 ns FWHM)

at 1064 nm

1600 mJ

10000 mJ

at 532 nm2)

1000 mJ

6000 mJ

Pulse energy stability (Std. Dev) 3)

at 1064 nm

0.5 %

at 532 nm

1.0 %

Power drift 4)

± 2%

Pulse duration 5)

3-10 ns

Pulse repetition rate

10 Hz

Polarization @ 1064 nm 10)

vertical, >90 %

Optical pulse jitter 6)

<30 ps

Linewidth

<0.1 cm-1

Beam profile

''Hat-Top'' (at laser output), without diffraction rings

Typical beam diameter 7)

~11 mm

~33 mm

Beam divergence 8)

<0.5 mrad

Beam pointing stability

± 50 µrad

Physical characteristics

Laser head size (WxLxH)

750x1350x300 mm

1000x2100x300 mm

Power supply unit size (WxLxH)

550x600x850 mm - 1 unit

550x600x670 mm - 1 unit

500x600x1220 mm - 2 units

550x600x670 mm - 1 unit

Umbilical length

3 m

Operating requirements

Water consumption (max 20° C)14)

< 8 l/min

< 40 l/min

Ambient temperature

stabilized, from range 18-25 °C

Relative humidity

20-80 % (non-condensing)

Power requirements 9)

208/240 V AC, single phases 50/60 Hz

or 208/240 V AC, three phases 50/60 Hz

208/380 V AC, three phases, 50/60 Hz

Power consumption

5.5 kW

13.2/6.6 kW

1) Due to continuous improvement, all specifications subject to change without notice. For latest product information please visit EKSPLA. Parameters marked typical may vary with each unit we manufacture.Unless stated otherwise, all specifications are measured at 1064 nm.

2) For NL3194X-SH harmonics generator option. Harmonics outputs are not simultaneous; only single wavelength beam is present at the output at once. Manual reconfiguration is required to switch wavelength.